If you have a new account but are having problems posting or verifying your account, please email us on hello@boards.ie for help. Thanks :)

Hello all! Please ensure that you are posting a new thread or question in the appropriate forum. The Feedback forum is overwhelmed with questions that are having to be moved elsewhere. If you need help to verify your account contact hello@boards.ie

more keyboard sniffing

09-09-2009 06:56PM

#1

Capt'n Midnight

Moderators, Recreation & Hobbies Moderators, Science, Health & Environment Moderators, Technology & Internet Moderators Posts: 94,840 Mod ✭✭✭✭

Join Date: March 2003

Posts: 93077

http://www.cybernymity.com/

Presenters at the CanSecWest security conference detailed how to sniff data by analyzing keystroke vibrations using a laser pointed at a laptop computer, or through electrical signals coming from a PS/2 keyboard on a PC plugged into an electrical socket.

Using about $80 worth of equipment, researchers pointed a laser on the reflective surface of a laptop between 50 feet and 100 feet away and were able to determine what letters were typed. Line-of-sight is required, but it works through a glass window. Using an infrared laser would prevent the victim from discovering they are under surveillance.

In the second attack method, researchers were able to determine keystrokes on a PS/2 keyboard through a ground line from a power plug in an outlet 50 feet away. They used a digital oscilloscope and analog-digital converter, as well as filtering technology to isolate the keystroke pulses from other power line noise.

0